Terasic DE1

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The Terasic DE1 is an Altera FPGA development board.

Pin Mapping

Switches

Switches
Function FPGA Pin
Toggle 0 PIN_L22
Toggle 1 PIN_L21
Toggle 2 PIN_M22
Toggle 3 PIN_V12
Toggle 4 PIN_W12
Toggle 5 PIN_U12
Toggle 6 PIN_U11
Toggle 7 PIN_M2
Toggle 8 PIN_M1
Toggle 9 PIN_L2
Pushbutton 0 PIN_R22
Pushbutton 1 PIN_R21
Pushbutton 2 PIN_T22
Pushbutton 3 PIN_T21

LEDs

LEDs
Function FPGA Pin
LED Red 0 PIN_R20
LED Red 1 PIN_R19
LED Red 2 PIN_U19
LED Red 3 PIN_Y19
LED Red 4 PIN_T18
LED Red 5 PIN_V19
LED Red 6 PIN_Y18
LED Red 7 PIN_U18
LED Red 8 PIN_R18
LED Red 9 PIN_R17
LED Green 0 PIN_U22
LED Green 1 PIN_U21
LED Green 2 PIN_V22
LED Green 3 PIN_V21
LED Green 4 PIN_W22
LED Green 5 PIN_W21
LED Green 6 PIN_Y22
LED Green 7 PIN_Y21

7-segment Displays

7-segment Displays
Function FPGA Pin
Seven Segment Digit 0 Segment 0 PIN_J2
Seven Segment Digit 0 Segment 1 PIN_J1
Seven Segment Digit 0 Segment 2 PIN_H2
Seven Segment Digit 0 Segment 3 PIN_H1
Seven Segment Digit 0 Segment 4 PIN_F2
Seven Segment Digit 0 Segment 5 PIN_F1
Seven Segment Digit 0 Segment 6 PIN_E2
Seven Segment Digit 1 Segment 0 PIN_E1
Seven Segment Digit 1 Segment 1 PIN_H6
Seven Segment Digit 1 Segment 2 PIN_H5
Seven Segment Digit 1 Segment 3 PIN_H4
Seven Segment Digit 1 Segment 4 PIN_G3
Seven Segment Digit 1 Segment 5 PIN_D2
Seven Segment Digit 1 Segment 6 PIN_D1
Seven Segment Digit 2 Segment 0 PIN_G5
Seven Segment Digit 2 Segment 1 PIN_G6
Seven Segment Digit 2 Segment 2 PIN_C2
Seven Segment Digit 2 Segment 3 PIN_C1
Seven Segment Digit 2 Segment 4 PIN_E3
Seven Segment Digit 2 Segment 5 PIN_E4
Seven Segment Digit 2 Segment 6 PIN_D3
Seven Segment Digit 3 Segment 0 PIN_F4
Seven Segment Digit 3 Segment 1 PIN_D5
Seven Segment Digit 3 Segment 2 PIN_D6
Seven Segment Digit 3 Segment 3 PIN_J4
Seven Segment Digit 3 Segment 4 PIN_L8
Seven Segment Digit 3 Segment 5 PIN_F3
Seven Segment Digit 3 Segment 6 PIN_D4

VGA

VGA
Function FPGA Pin
VGA Red 0 PIN_D9
VGA Red 1 PIN_C9
VGA Red 2 PIN_A7
VGA Red 3 PIN_B7
VGA Green 0 PIN_B8
VGA Green 1 PIN_C10
VGA Green 2 PIN_B9
VGA Green 3 PIN_A8
VGA Blue 0 PIN_A9
VGA Blue 1 PIN_D11
VGA Blue 2 PIN_A10
VGA Blue 3 PIN_B10
VGA Sync H PIN_A11
VGA Sync V PIN_B11

Audio CODEC

Audio CODEC
Function FPGA Pin
Audio CODEC ADC LR Clock PIN_A6
Audio CODEC ADC Data PIN_B6
Audio CODEC DAC LR Clock PIN_A5
Audio CODEC DAC LR Clock PIN_B5
Audio CODEC Chip Clock PIN_B4
Audio CODEC Bit-Stream Clock PIN_A4
Audio CODEC I2C Data PIN_A3
Audio CODEC I2C Clock PIN_B3

Clock/Serial Comms

Clock/Serial Comms
Function FPGA Pin
Clock 24MHz (from USB Blaster) PIN_A12, PIN_B12
Clock 27MHz PIN_D12, PIN_E12
Clock 50MHz PIN_L1
RS232 Receive PIN_F14
RS232 Transmit PIN_G12
PS/2 Clock PIN_H15
PS/2 Data PIN_J14

SDRAM

SDRAM
Function FPGA Pin
SDRAM Address 0 PIN_W4
SDRAM Address 1 PIN_W5
SDRAM Address 2 PIN_Y3
SDRAM Address 3 PIN_Y4
SDRAM Address 4 PIN_R6
SDRAM Address 5 PIN_R5
SDRAM Address 6 PIN_P6
SDRAM Address 7 PIN_P5
SDRAM Address 8 PIN_P3
SDRAM Address 9 PIN_N4
SDRAM Address 10 PIN_W3
SDRAM Address 11 PIN_N6
SDRAM Data 0 PIN_U1
SDRAM Data 1 PIN_U2
SDRAM Data 2 PIN_V1
SDRAM Data 3 PIN_V2
SDRAM Data 4 PIN_W1
SDRAM Data 5 PIN_W2
SDRAM Data 6 PIN_Y1
SDRAM Data 7 PIN_Y2
SDRAM Data 8 PIN_N1
SDRAM Data 9 PIN_N2
SDRAM Data 10 PIN_P1
SDRAM Data 11 PIN_P2
SDRAM Data 12 PIN_R1
SDRAM Data 13 PIN_R2
SDRAM Data 14 PIN_T1
SDRAM Data 15 PIN_T2
SDRAM Bank Address 0 PIN_U3
SDRAM Bank Address 1 PIN_V4
SDRAM Low-byte Data Mask PIN_R7
SDRAM High-byte Data Mask PIN_M5
SDRAM Row Address Strobe PIN_T5
SDRAM Column Address Strobe PIN_T3
SDRAM Clock Enable PIN_N3
SDRAM Clock PIN_U4
SDRAM Write Enable PIN_R8
SDRAM Chip Select PIN_T6

SRAM

SRAM
Function FPGA Pin
SRAM Address 0 PIN_AA3
SRAM Address 1 PIN_AB3
SRAM Address 2 PIN_AA4
SRAM Address 3 PIN_AB4
SRAM Address 4 PIN_A5
SRAM Address 5 PIN_AB10
SRAM Address 6 PIN_AA11
SRAM Address 7 PIN_AB11
SRAM Address 8 PIN_V11
SRAM Address 9 PIN_W11
SRAM Address 10 PIN_R11
SRAM Address 11 PIN_T11
SRAM Address 12 PIN_Y10
SRAM Address 13 PIN_U10
SRAM Address 14 PIN_R10
SRAM Address 15 PIN_T7
SRAM Address 16 PIN_Y6
SRAM Address 17 PIN_Y5
SRAM Data 0 PIN_AA6
SRAM Data 1 PIN_AB6
SRAM Data 2 PIN_AA7
SRAM Data 3 PIN_AB7
SRAM Data 4 PIN_AA8
SRAM Data 5 PIN_AB8
SRAM Data 6 PIN_AA9
SRAM Data 7 PIN_AB9
SRAM Data 8 PIN_Y9
SRAM Data 9 PIN_W9
SRAM Data 10 PIN_V9
SRAM Data 11 PIN_U9
SRAM Data 12 PIN_R9
SRAM Data 13 PIN_W8
SRAM Data 14 PIN_V8
SRAM Data 15 PIN_U8
SRAM Write Enable PIN_AA10
SRAM Output Enable PIN_T8
SRAM High-byte Data Mask PIN_W7
SRAM Low-byte Data Mask PIN_Y7
SRAM Chip Enable PIN_AB5

Flash

Flash
Function FPGA Pin
Flash Address 0 PIN_AB20
Flash Address 1 PIN_AA14
Flash Address 2 PIN_Y16
Flash Address 3 PIN_R15
Flash Address 4 PIN_T15
Flash Address 5 PIN_U15
Flash Address 6 PIN_V15
Flash Address 7 PIN_W15
Flash Address 8 PIN_R14
Flash Address 9 PIN_Y13
Flash Address 10 PIN_R12
Flash Address 11 PIN_T12
Flash Address 12 PIN_AB14
Flash Address 13 PIN_AA13
Flash Address 14 PIN_AB13
Flash Address 15 PIN_AA12
Flash Address 16 PIN_AB12
Flash Address 17 PIN_AA20
Flash Address 18 PIN_U14
Flash Address 19 PIN_V14
Flash Address 20 PIN_U13
Flash Address 21 PIN_R13
Flash Data 0 PIN_AB16
Flash Data 1 PIN_AA16
Flash Data 2 PIN_AB17
Flash Data 3 PIN_AA17
Flash Data 4 PIN_AB18
Flash Data 5 PIN_AA18
Flash Data 6 PIN_AB19
Flash Data 7 PIN_AA19
Flash Output Enable PIN_AA15
Flash Reset PIN_W14
Flash Write Enable PIN_Y14